JP2000253795A - Operation member supporting apparatus for knapsack working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a lever-like supporting body 34, to be provided with a throttle lever 19 at the tip of the body, changeable to a use position and a housing position in a knapsack power spraying machine 10 and to make the use position adjustable. SOLUTION: A recessed side spherical surface 54 of a bowl part 35 of a lever-like supporting body 34 is relatively rotatably engaged with a projected side spherical surface 29 of a dome part 25 fixed to a base part 12. A bolt 47 is passed through the bowl part 35 and the dome part 25 in a displaceable way at a circular central hole 26 or a guide hole 27 of the dome part 25. A cam part 41 and a spherical surface-like washer 55 are fitted to both the ends of the bolt. When an engaging part 42 of a lock lever 36 is fitted to the lever- like supporting body 34 and raised by the lever-like supporting body 34, the gaps of the cam part 41 and the spherical surface-like washer 55 on the bolt 47 are diminished and enlarged, respectively. Consequently the recessed side spherical surface 54 and the projected side spherical surface 29 are mutually pressed and released from pressure and a flange part 24 is fixed to a fitting bracket 22 and made displaceable.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operating member support device for a backpack working machine mounted on a backpack working machine body as a mounting portion for an operating member such as a throttle lever, and more particularly, to switching between a storage position and a use position. Not only the position of use as appropriate,
The present invention relates to an operation member support device for a backpack working machine that can be adjusted.

[0002]

2. Description of the Related Art A backpack power sprayer is equipped with a throttle lever for adjusting the engine output so that the operator can easily manually operate the throttle lever while carrying the backpack working machine on his back. In order to achieve this, a base end is connected to the side of the backpack working machine body and attached to the front end of a lever-shaped support that projects the front end side forward. When the throttle lever is not in use, the lever-shaped support is in a retracted position that does not protrude forward and stands along the side of the backpack power sprayer (for example, 7-67).
No. 80 and Japanese Utility Model Publication No. 8-10377).

[0003]

In the conventional operating member support device for a backpack working machine, a lever-like support for mounting an operating member such as a throttle lever can be switched between a use position and a storage position. It has been difficult to adjust the position appropriately in accordance with the user's preference and state.

An object of the present invention is to provide an operation member supporting device for a backpack working machine which overcomes the above-mentioned problems.

[0005]

The operating member support device (18) for a backpack working machine according to the present invention has the following. It is fixed to the side of the backpack working machine body (11, 12) and the spherical part (2
A coupling member (22) having a support member side spherical portion (54) that is rotatably fitted to the coupling member side spherical portion (29) of the coupling member (22) has a base end and an operation at a distal end. Oscillating support member (34) to which member (19) can be attached The connecting member-side spherical portion (29) and the supporting member-side spherical portion (54) are releasably pressed against each other. ) And crimping means (41, 70) for restraining the relative rotation of the support member-side spherical portion (54) with respect to each other.

The backpack working machine (10) is, for example, a backpack working machine, and the operating member (19) is, for example, a throttle lever (19) of the backpack working machine. The backpacking machine (10) is not limited to the engine mounted type.In the backpacking machine (10) equipped with a battery-driven motor, the operating member (19) turns on and off the power supply of the battery to the motor. It may be a switch or a lever of a controller for controlling the applied voltage of the motor.

The joint member-side spherical portion (29) and the support member-side spherical portion (54) are relatively rotatable relative to each other when the crimping by the crimping means (41, 70) is released. The relative rotation of the support member-side spherical portion (54) with respect to the coupling member-side spherical portion (29) changes the relative position of the swing-type support member (34) with respect to the coupling member (22). Normally, the coupling member (22) is fixed to the front end of the side of the backpack working machine (11, 12), and the use position and the storage position of the swing type support member (34) are respectively The position protrudes substantially horizontally forward with respect to the main bodies (11, 12), and the position which stands substantially vertically along the sides of the backpack working machine main bodies (11, 12). Therefore, in the process of switching between the use position and the storage position, for example, the support member-side spherical portion (54) is relatively rotated in the meridian direction with respect to the coupling member-side spherical portion (29), whereby the swing type support member ( 34) is the connecting member
The position in the meridian direction (corresponding to latitude) with respect to (22) is changed, and the position is switched to a position protruding substantially horizontally forward as a use position and a position standing almost vertically as a storage position. In the use position and the storage position, the spherical part on the coupling member side
(29) and the support-member-side spherical portion (54) are brought into a crimped state by the crimping means (41, 70), whereby the support-member-side spherical portion (54) with respect to the coupling-member-side spherical portion (29). The relative rotation is restricted, and the position of the swing-type support member (34) with respect to the coupling member (22) is fixed. In order to adjust the usage position of the oscillating support member (34), the spherical member (2
The support member-side spherical portion (54) is rotated relative to the meridian direction in a direction different from the meridian direction, that is, in a direction at a predetermined inclination angle with respect to the meridian direction, usually in the latitudinal direction. The position of the swingable support member (34) in the direction is changed (corresponding to longitude). The optimal use position of the swing type support member (34) varies depending on the user's physique and preference using the backpack working machine (11, 12), and when the optimal use position for the user is reached, the crimping means (41, 70) on the coupling member side spherical surface (2
9) and the support member-side spherical portion (54) are pressed against each other to fix the position of the swing type support member (34). Then, the user operates the operation member (19) at the position of the swing type support member (34).

As described above, the swing type support member (34) can be switched between the use position and the storage position as appropriate, and the use position of the swing type support member (34) can be adjusted according to the user's physique and preference. Adjustable.

An operating member supporting device for a backpack working machine according to the present invention.
According to (18), the through hole (26) and the guide hole (27) extending from the through hole (26) are provided with the coupling member side spherical portion (29) and the support member side spherical portion.
An insertion body (47, 66) is provided in one of the (54) and the other of the coupling member-side spherical portion (29) and the support member-side spherical portion (54). Coupling member side spherical portion (29) and support member side spherical portion (54)
When the position of the insert (47, 66) is in the through hole (26),
It is relatively rotatable in the circumferential direction of the through hole (26).
When the position of (47, 66) is in the guide hole (27), the guide hole (2
The insertion body (47, 66) is guided in the extending direction of 7), and is relatively rotatable.

The guide hole (27) usually extends in a straight line, but also includes a case where the guide hole (27) extends in a curved or bent shape.

The relative rotation of the insert (47, 66) in the through hole (26) in the circumferential direction of the through hole (26) causes the support member side spherical portion (54) to rotate.
Rotates relative to the coupling member-side spherical portion (29) in the first rotational direction. The movement of the insert (47, 66) in the guide hole (27) in the direction in which the guide hole (27) extends as a second rotation direction different from the first rotation direction causes the support member-side spherical portion (54 ) Rotates relative to the coupling member-side spherical portion (29) in the second rotation direction. The relative movement of the support member side spherical portion (54) in the first and second rotational directions on the spherical surface of the coupling member side spherical portion (29)
It may be assigned to the switching direction between the use position and the storage position and the position adjustment direction of the use position, or conversely, may be assigned to the position adjustment direction of the use position and the switching direction between the use position and the storage position, respectively. Good.

An operation member supporting device for a backpack working machine according to the present invention.
According to (18), the insert includes the coupling member (22) and the swing-type support member (34) with the coupling member-side spherical portion (29) and the support member-side spherical portion.
A shaft body (47) penetrating at (54), wherein two clamping members
(41, 55) are attached to the shaft (47) so that the mutual distance in the axial direction of the shaft (47) can be changed while sandwiching the coupling member (22) and the swing type support member (34) from both sides. The cam member (41) as a crimping means is a pressing member (41, 55) in the axial direction of the shaft body (47).
Is provided on the shaft body (47) so as to be switchable between the first and second distances, and the first and second distances are set to the coupling member side spherical portion (29).
In addition, it is set in accordance with the pressure-bonded state and the pressure-released state of the support-member-side spherical portion (54).

The cam member (41) side of the two pressing members (41, 55) may serve as the cam member (41) or the cam member (4).
It may be separate from 1).

When the mutual distance between the two pressing members (41, 55) in the direction of the shaft body (47) is set to the first distance by the cam member (41), the spherical surface portion (54) on the support member side. Is the spherical surface on the coupling member side
The rocking support member (34) is crimped to (29), and the relative position of the swing type support member (34) to the coupling member (22) is fixed. The mutual distance between the two pressing members (41, 55) in the direction of the shaft body (47) is the second distance by the cam member (41).
The support member side spherical portion (54) is released from being pressed against the coupling member side spherical portion (29), and the swing type support member (34) is relatively positioned with respect to the coupling member (22). The position is fixed.

By using the cam member (41), the first and second
Can be made sufficiently large, so that the press-bonded state and the press-released state of the joint-member-side spherical portion (29) and the support-member-side spherical portion (54) can be ensured.

An operating member supporting device for a backpack working machine according to the present invention.
According to (18), the crimping means is a tension spring (70) that pulls the insert (66) to crimp the joint member-side spherical portion (29) and the support member-side spherical portion (54) mutually.

In crimping of the coupling member-side spherical portion (29) and the support member-side spherical portion (54) due to the tensile force of the tension spring (70), the operation force of the rocking type support member (34) by the user is predetermined. Below the value,
The relative rotation of the coupling member-side spherical portion (29) and the support member-side spherical portion (54) is restricted, and the swing type support member (34) is connected to the coupling member.
(22) is held in a fixed state. Further, when the operation force of the swing type support member (34) by the user is equal to or more than a predetermined value,
The operating force overcomes the frictional force between the coupling member-side spherical portion (29) and the support member-side spherical portion (54), and the coupling member-side spherical portion (2
9) and the support member side spherical portion (54) rotate relative to each other. When the user relatively moves and fixes the swing type support member (34) with respect to the coupling member (22), the user does not need to operate the cam member (41) or the like.

An operating member supporting device for a backpack working machine according to the present invention.
According to (18), the guide hole (27) extends substantially straight in a direction substantially perpendicular to the operation direction of the operation member (19).

When the user operates the operating member (19), since the operating direction is perpendicular to the extending direction of the guide hole (27), the coupling member-side spherical portion (29) and the connecting member-side spherical portion (29) in the operating direction are provided. The relative rotation of the support member-side spherical portion (54) is prevented by the contact force of the insert (47, 66) on the side edge of the guide hole (27). That is, even if the pressing force between the coupling member-side spherical portion (29) and the support member-side spherical portion (54) by the tension spring (70) is somewhat weak, the operating member
The co-rotating relative rotation of the coupling member-side spherical portion (29) and the support member-side spherical portion (54) accompanying the operation of (19) is prevented, and as a result,
The oscillating support member (34) for changing the position of the oscillating support member (34) can reduce the tensile force of the extension spring (70).
The user's operation force to the user can be reduced.

[0020]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a backpack power sprayer 10. The backpack main body includes a chemical solution tank 11 for storing a chemical solution injected from an upper inlet, and a base 12 disposed below the chemical solution tank 11 on which an engine and a pump (both not shown) are mounted. , And is formed from an integrally molded product made of resin. The backrest 13 is attached to the front part of the backpack main body at a position where the backrest 13 hits the back of the user when carrying the backpack power sprayer 10. A pair of backpack bands 14
On the front side of the backpack main body, the left and right ends of the backpack power sprayer 10 extend from the center in the left-right direction above the backrest 13 to the left and right end portions below the backrest 13, respectively. And the backpack band 14. The support device 18 is provided at the lower part of the left side of the backpack body, and the lever-shaped support 34 of the support device 18 is displaceable in the A direction between the initial position P1 of the use position and the adjusted position P2. Yes, the initial position P1 of the use position and the storage position P
3, and can be displaced in the B direction. The throttle lever 19 is swingably attached to the tip of the lever-shaped support member 34, and the engine output is adjusted by adjusting the swing position.

FIG. 2 is a front view of the mounting bracket 22. The mounting bracket 22 has a flange 24 having a substantially square peripheral contour, and each corner of the flange 24 has an insertion hole.
23 are drilled. The hollow dome part 25 is a flange part
The dome portion 25 has a circular center hole 26 and a guide hole 27 which project from the center of the dome 24 and have a convex spherical surface 29 on the surface. The circular center hole 26 is located at the center of the dome portion 25, and the guide hole 27 is located rearward of the backpack power sprayer 10 from the round center hole 26 (in FIG. (Corresponding to the front and the rear). The overhanging step 28 is located above and on the left and right sides of the convex spherical surface 29, and extends from the convex spherical surface 29.

FIG. 3 is a front view showing the support device 18 mounted on the mounting bracket 22. Lever support 34
Has a bowl portion 35 at the base end and a circular opposing wall portion 37 at the distal end, and the throttle lever 19 is swingably supported by the circular opposing wall portion 37, and the throttle lever 19 extends from the circular opposing wall portion 37. It is protruding. The lock lever 36 is swingably connected to the bowl 35 on the base end side, and is a lever-shaped support on the distal end side.
34 is detachably fitted.

FIG. 4 is a perspective view of the lock lever 36. Both the base side cam portion 41 and the distal end side fitting portion 42 have a bifurcated opposed wall structure, and the cam portion 41 has an insertion hole 43 through which a connecting pin 59 (FIG. 6) is inserted. .

FIG. 5 is a perspective view of the bolt 47. Bolt 47
Is axially divided into a square cross section 48 having a square cross section and a screw groove section 49 in the axial direction. The insertion hole 50 is formed at the end of the rectangular cross section 48, and the connection pin 59 (FIGS. 6 and 7) is inserted therethrough. The insertion hole 51 is formed at an end of the screw groove 49, and a retaining pin 58 (FIGS. 6 and 7) is inserted therethrough.

FIGS. 6 and 7 are cross-sectional views of the support device 18 showing the lever-shaped support 34 in the first and second use positions. In the lever-shaped support 34, the first and second use positions correspond to P1 and P2 in FIG. 1, respectively.
34, the tip is directed straight forward (in FIGS. 6 and 7, the left side means the front of the backpack power sprayer 10 and the right side is the rear of the backpack power sprayer 10). In the second use position, the tip is directed straight leftward by a predetermined angle from the front. Bolt 64 is attached to each flange 24
After being inserted into (FIG. 2), it is screwed to the base 12. Lever support
The inner surface side of the bowl portion 35 of 34 is a concave spherical surface 54, the radius of the concave spherical surface 54 is defined to be equal to the radius of the convex spherical surface 29, and the concave spherical surface 54 rotates relative to the convex spherical surface 29. Fit freely. The overhanging step 28 in FIG. 2 functions as a stopper that limits the range of relative rotation by the peripheral edge of the bowl 35 abutting when the concave spherical surface 54 rotates relative to the convex spherical surface 29. The connecting portion 59 of the cam portion 41 of the lock lever 36 is inserted into the insertion hole 50 (FIG. 5). Square section 48 is threaded
From the direction of 49, the bowl 35 of the lever-shaped support 34, the circular center hole 26 or the guide hole 27 of the convex spherical surface 29 of the mounting bracket 22 are sequentially inserted, and the screw groove 49 is projected toward the concave surface of the dome 25. I have. A spherical washer 55
After fitting, the nut 56 is screwed. Spherical washer
55 is larger than the diameter of the circular center hole 26 and the width of the guide hole 27, and the radius of curvature is equal to or smaller than the radius of the spherical surface of the inner surface of the spherical washer 55, and does not fall out of the circular center hole 26 or the guide hole 27. It has become. The nut 56 has its convex curved surface portion 57 applied to the spherical washer 55, and the retaining pin 58
Is inserted into the insertion hole 51 (FIG. 5) of the screw groove portion 49 and functions as a stopper for the spherical washer 55 and the nut 56 from the screw groove portion 49. The clamping pressure between the convex spherical surface 29 and the concave spherical surface 54 is set to a desired value by raising the lock lever 36 and rotating the lock lever 36 while pulling it to change the screwing position of the nut in the screw groove 49. Can be adjusted.

When changing the position of the lever-shaped support 34, the fitting portion 42 of the lock lever 36 is raised from the lever-shaped support 34. The contour of the peripheral surface of the cam portion 41 is set so that the distance between each part on the peripheral surface and the connection pin 59 gradually changes in the peripheral direction of the cam portion 41. Therefore, the distance between the portion of the cam portion 41 that contacts the bowl portion 35 and the connection pin 59 decreases, and as a result, the distance between the portion of the cam portion 41 that contacts the bowl portion 35 and the spherical washer 55 increases, The clamping force of the cam part 41 and the spherical washer 55 between the dome part 25 and the lever-shaped support 34 is reduced. In this manner, the pressure contact between the convex spherical surface 29 and the concave spherical surface 54 is released, and the convex spherical surface 29 and the concave spherical surface 54 can be slid relative to each other. By moving the rectangular cross section 48 along the guide hole 27 and changing it to an arbitrary position in the guide hole 27 or a position in the circular center hole 26, the lever-shaped support 34 with respect to the horizontal front of the backpack power sprayer 10 is moved. The inclination angle α changes (this change of α corresponds to the displacement of the lever-like support 34 of the support device 18 in the direction A in FIG. 1), that is, the lever-like support of the back-loading power sprayer 10 in the left-right direction. The position of the circular confronting wall 37 at the tip of 34 changes. When the bolt 47 is located at the position of the circular center hole 26, the inclination angle α = 0, and when the bolt 47 is in the guide hole 27, the inclination angle α> 0. When it is in a part away from 26, α
Increases. When the lever-shaped support 34 has a desired α, the fitting portion 42 is tilted down to the lever-shaped support 34, and the lever-shaped support 34
Fits. Therefore, since the rectangular cross-section 48 of the insert 47 integrated with the lock lever 36 is inserted into the guide hole 27 with a slight gap, the lever support 34 is inserted.
Is integrated with the lock lever 36 to prevent an unexpected movement in the vertical direction (the direction perpendicular to the swing from the use position P1 to the use position P2). By the fitting of the fitting portion 42 to the lever-shaped support 34, the distance between the connecting pin 59 and the spherical washer 55 is reduced, and the dome portion 25 and the lever-shaped support 34
And the spherical washer 55 firmly presses the convex spherical surface 29 and the concave spherical surface 54 into a crimped state with each other, and the lever-shaped support 34 is fixed to the mounting bracket 22.

When the lever-like support 34 is switched from the use position to the storage position, the lock lever 36 unlocks the dome portion 25 and the lever-like support 34 from the use position in FIG. When the lever 48 is positioned in the circular center hole 26, the lever-shaped support 34 is rotated about the axis of the bolt 47, and is horizontally moved forward of the backpack power sprayer 10 (corresponding to the position P1 of the lever-shaped support 34 in FIG. 1). .) (The change in β corresponds to the displacement of the lever-shaped support 34 of the support device 18 in the direction B in FIG. 1).
To change. Thus, when β = 90 °, the lever-shaped support 34 is at the storage position P3 in FIG. 1, and thereafter, the fitting portion 42 of the lock lever 36 is fitted to the lever-shaped support 34, and The body 34 is fixed at the storage position P3.

FIG. 8 shows another mechanism for locking the lever-shaped support 34 to the mounting bracket 22. 6 and 7 are indicated by the same reference numerals, and only the differences will be described. The columnar projection 66 of the prism is protruded from the concave spherical surface 54 on the inner surface side of the bowl portion 35, and the circular center hole 26 is rotatable around the center line of the circular center hole 26.
Thus, the guide hole 27 is guided in the extending direction of the guide hole 27 while maintaining a small gap between the guide hole 27 and the guide hole 27. The mounting plate 67 has its peripheral edge applied to the step on the concave surface side of the dome portion 25, and the displacement toward the columnar projection 66 is restricted. bolt
68 is inserted through the center hole of the mounting plate 67
At both ends, the columnar projections 66 are locked by the distal ends of the columnar projections 66 and the bolts 68, and pull the columnar projections 66 toward the mounting plate 67. The nut 69 is screwed to the end of the bolt 68 on the opposite side of the locking portion of the extension coil spring 70 to the bolt 68, and
The contact with the bolt 67 prevents the bolt 68 from coming off the mounting plate 67 toward the extension coil spring 70. Extension coil spring
With a sufficient tensile force of 70, the concave spherical surface 54 is pressed against the convex spherical surface 29, and the lever-shaped support 34 is fixed to the mounting bracket 22. When an operating force equal to or greater than a predetermined value is applied to the lever-shaped support 34, the frictional force between the convex spherical surface 29 and the concave spherical surface 54 due to the tensile force of the tension coil spring 70 is overcome, and the concave spherical surface 54 becomes convex convex spherical surface 29. , And becomes rotatable relative to. The columnar projection 66 moves along the guide hole 27 (corresponding to the direction A in FIG. 1), and the columnar projection 66 rotates around the circular center hole 26 (direction B in FIG. 1). ), By applying an operating force to the lever-shaped support 34,
Change 34 to P3 or P1. Since the columnar projection 66 is square and fits in the guide hole 27, the movement of the lever-shaped support 34 in the direction orthogonal to the direction A is suppressed. When the lever-shaped support 34 is at a desired position, the lever-shaped support 34
The operating force on the lever support 34 and the mounting bracket 22 is released by the tensile force of the tension coil spring 70.
Are pressed against each other on the concave spherical surface 54 and the convex spherical surface 29, and the position of the lever-shaped support 34 is restricted.

FIG. 9 is a modification of FIG. Only differences from FIG. 8 will be described. Dome 25 and concave spherical surface 54
8 is provided on the side of the mounting bracket 22 and on the side of the lever-shaped support 34 in FIG.
On the other hand, on the other hand, they are provided on the lever-shaped support 34 side and the mounting bracket 22 side, respectively. Accordingly, the circular center hole 26 and the guide hole 27 are formed on the lever-shaped support body 34 side, and the columnar projection 66 is formed on the concave spherical surface 54 on the mounting bracket 22 side.
Protruding from the center of The cap 77 is detachably attached to the opening of the dome 25, and closes the opening. The mutual pressing force of the convex spherical surface 29 and the concave spherical surface 54 for fixing the lever-shaped support 34 to the mounting bracket 22 utilizes the tensile force of the tension coil spring 70, and the P1, P of the lever-shaped support 34 is used.
The switching operation of P2 and P3 is the same as that of FIG.

8 and 9, the columnar projection 66
Is preferably a square shape, but a cylindrical shape may be used for achieving the object of the present invention.

[Brief description of the drawings]

FIG. 1 is a perspective view of a backpack power sprayer.

FIG. 2 is a front view of a mounting bracket.

FIG. 3 is a front view showing the support device in a state of being attached to a mounting bracket.

FIG. 4 is a perspective view of a lock lever.

FIG. 5 is a perspective view of a bolt.

FIG. 6 is a sectional view of the supporting device in a first use position of the lever-shaped support.

FIG. 7 is a sectional view of the support device in a second use position of the lever-shaped support.

FIG. 8 shows another locking mechanism for the lever-shaped support to the mounting bracket.

FIG. 9 is a modification example of FIG.

[Explanation of symbols]

 REFERENCE SIGNS LIST 10 backpack power sprayer (backpacking machine) 11 chemical tank (backpacking machine body) 12 base (backpacking machine body) 18 support device (backing device operating member support device) 19 throttle lever 19 throttle lever (operating member) 22) Mounting bracket (coupling member) 26 Circular center hole (through hole) 27 Guide hole 29 Convex side spherical surface (coupling member side spherical portion) 34 Lever support (oscillating type support member) 36 Lock lever (crimping means) 41 Cam part (cam member, crimping means, clamping member) 47 Bolt (shaft body) 54 Concave spherical surface (support member-side spherical part) 55 Spherical washer (clamping member) 70 Tension coil spring (crimping means)

Claims (5)

[Claims] A coupling member (22) fixed to a side portion of a backpack working machine main body (11, 12) and having a coupling member-side spherical portion (29), the coupling member-side spherical portion of the coupling member (22). A swing-type support member that has a spherical surface (54) on the support member side that is rotatably fitted to 29) at the base end and an operating member (19) at the tip.
(34), and the connecting member-side spherical portion (29) and the support member-side spherical portion (54) are releasably press-bonded to each other. An operation member supporting device for a backpack working machine, comprising: crimping means (41, 70) for restraining the relative rotation of the portions (54). 2. A through hole (26) and a guide hole (27) extending from the through hole (26) are formed in one of the coupling member-side spherical portion (29) and the support member-side spherical portion (54). And inserts (47,66)
Are provided on the other of the coupling member-side spherical portion (29) and the support member-side spherical portion (54), and the coupling member-side spherical portion (29) and the support member-side spherical portion (54) are provided with the insertion member. When the position of the body (47, 66) is in the through hole (26), the body (47, 66) is relatively rotatable in the circumferential direction of the through hole (26), and the insert (47, 66)
Is located in the guide hole (27), the guide hole (2
The operating member support device for a backpack working machine according to claim 1, wherein the insertion member (47, 66) is guided relative to the extending direction of (7), and is relatively rotatable. 3. The insertion body has a shaft that penetrates the coupling member (22) and the oscillating support member (34) at the coupling member-side spherical portion (29) and the support member-side spherical portion (54). A body (47), wherein two clamping members (41, 55) sandwich the coupling member (22) and the oscillating support member (34) from both sides while holding the shaft of the shaft body (47). The shaft body (47) so that the mutual distance to the direction can be changed freely
A cam member (41) as the crimping means is attached to
The distance between the pressing members (41, 55) in the axial direction of the shaft (47) is provided on the shaft (47) so as to be switchable between first and second distances, and the first and second 3. The backpack working machine according to claim 2, wherein the distance is set in accordance with a crimping state and a crimping release state of the coupling member-side spherical portion (29) and the support member-side spherical portion (54). Operating member support device. 4. The crimping means includes a tension spring (70) for pulling the insert (66) and crimping the joint member-side spherical portion (29) and the support member-side spherical portion (54) to each other. 3. The operating member supporting device for a backpack working machine according to claim 2, wherein: 5. The operation for a backpack working machine according to claim 4, wherein the guide hole (27) extends substantially straight in a direction substantially perpendicular to the operation direction of the operation member (19). Member support device.